弹性力学变分原理的内在演变关系及等价性证明

THE INITIAL DEVELOPMENT RELATION OF VARIATIONAL PRINCIPLES IN ELASTICITY AND THE IDENTITY DEMONSTRATION

建立有限元模型是基于各种各样的变分原理，本文系统论述了弹性力学传统变分原理的内在演变关系，并给出了最一般意义的二类变量广义变分原理等价性的证明方法。

The finite element models established were based on various variational principles. In this paper, the initial development relation of traditional variational principles in elasticity was discussed systematically, and the demonstration method was stated that the most generalized variational principles invdving 2 varialbes were identical.